There have been a few occasions where this has led to (literally) years of extra maintenance work for me, as I patiently wait for a team of devs to replace my custom app with v2 using $wellKnownFramework. Sometimes that v2 is eventually abandoned and I'm contracted to build v3.
Also seen this where the $wellKnownFramework is dumped before v2 is completed, and the whole thing is rewritten in $newHotFramework for no other reason than the dev team wanted to work in $newHotFramework.
